Dissemination via smartphone PROJECT

The workshops covered the following topics: Conservation with traditional materials and techniques Material investigation Building diagnosis pathology study, thermal imaging, endoscope Site analysis aerial photography, site survey Regional planning remote sensing – GIS Interpretation – story telling, historic routes Tourism Technology The specific venue for these exercises was developed in coordination with on-going restorationconservation works in Stolac. The primary focus was centered on the cultural heritage of Stolac - river objects, mills and bridges, as well as the Saric family house in Stolac, Branko Sotra Gallery and part of the complex of “Old Town Vidoski”. 3.2 Information capture During the courses many exercises were devoted to collection and mapping of the images. The capture technology that was used included the use of 14 GPS enabled Nikon Coolpix Aw30 cameras, tablet computers and smartphones to collect geo- referenced images of monuments, mills and bridges. The use of this technology allowed the community and team to build an inventory of places and monuments important to the community as well as update the official list of protected monuments. A defined protocol was taught during the courses and implemented for the capture of the images but with enough emphasis on flexibility to allow the participants to record what was important to them. This protocol included what time of day to capture the image, angle, general photography principles and note taking Eppich, 2007. The images as well as being spatial located were also organized along with the name of the monument, date and other key information making possible the indexing and archiving of these records. The photogrammetric 3 x 3 rules were used to capture images of monuments that were in total or partial ruin in order to collect sufficient data to create 3D models CIPA, 2013. This information was augmented with field measurements and the School of Architecture created these models using Photomodeler, Autocad and 3D Max. It was essential that the models were created with a low polygon count and reduced resolution textures as these had to be visible on smartphones. Numerous tests were conducted to ensure that these portable devices could process the 3D models. In the project the simple on-line collaborative tool Google Map was used to plan the courses, work schedules, identify monuments, review images and verify results. This free on-line tool made it possible to conduct meetings in real-time between Stolac, Sarajevo and Bilbao. As participants uploaded the images, descriptions and measurements during the courses they were visible to invited participants and partners. Understandably, the course participants produced many more images, data files and documentation than could be used in the final smartphone application therefore editing by the team was necessary. Nevertheless it gave the project team and participants an understanding what was important to the community and what to include in the final application and assist in planning the eventual visitor cultural routes. This highlights that many tools do not have to be difficult to use, expensive or sophisticated in order to be effective. All the tools were left with the school and tourism association in Stolac. An example is available at: www.connectingstolac.ba.

3.3 Dissemination via smartphone

The culmination of the project was the development of a smartphone application that would display the images on a map along with descriptions in three languages captured by the participants. This is freely available on the Android or Apple iOS for the community of Stolac as well as for visitors. The application used the GPS functionality of the smartphones to display in real time the description of the existing but also lost monuments for visitors. The camera features of the smartphone or tablet can recognize the direction and location and inform the user of the structure, its history and state of conservation. The application also displays historic photographs next to current photographs and historic maps. The 3D digital models were inserted into the application for augmented reality so the community and visitors could see structures that were lost and rotate and zoom on the models. All of this information was also made available on the webpage of the project. Three routes were planned for visitors: a short level route for older people, a route for children that passed the major monuments but crossed few streets and an adventurous route that was longer and led to the hill top fortress. With this application the visitor, students or conservators are able to view historic maps, photographs and other information while on site. This is useful for ongoing conservation projects, education and tourism. Figure 3 Testing the digital smartphone tablet computer guides on site in Stolac. A web version is also available as well as on a large table computer installed in the school Figure 4 A resultant map created in real time during the course using participatory imaging mapping with names, categories and descriptions Bridges to the Future, 2014 25th International CIPA Symposium 2015, 31 August – 04 September 2015, Taipei, Taiwan This contribution has been peer-reviewed. doi:10.5194isprsarchives-XL-5-W7-195-2015 197

4. PARTICIPATORY MAPPING